Christopher is best known for the role of Father Francis Mulcahy on "M.A.S.H.," the 1970s TV show set during the Korean War.

"Everyone adored him," said fellow "M.A.S.H." actor Loretta Swit. "A great sense of humor and a great humanitarian. He became TV's quintessential padre as Father Mulcahy on M.A.S.H. It was the most perfect casting ever known."